---
name: "bcmdmac"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/bcmdmac"
---

# bcmdmac(4)

Broadcom BCM238x DMA controller

## NAME

**bcmdmac** – Broadcom BCM238x DMA controller

## SYNOPSIS

**bcmdmac\* at fdt?**

## DESCRIPTION

The **bcmdmac** driver provides support for the DMA controller integrated on Broadcom BCM283x and BCM2711 SoCs.

The controller is used to support DMA for devices that don't provide a DMA controller of their own.

## SEE ALSO

[bcmsdhost(4)](/bcmsdhost/4.md), [intro(4)](/intro/4.md)

## HISTORY

OpenBSD support for **bcmdmac** first appeared in OpenBSD 6.7.

## AUTHORS

The **bcmdmac** driver was written by Jared D. McNeill for NetBSD and ported to OpenBSD by Neil Ashford ⟨*ashfordneil0@gmail.com*⟩ and Tobias Heider ⟨*tobhe@openbsd.org*⟩.